Pith Number

pith:RHG66CRB

pith:2011:RHG66CRBTQFHM7FDQDXPKDTFKR

not attested not anchored not stored refs pending

A Swift Look at SN 2011fe: The Earliest Ultraviolet Observations of a Type Ia Supernova

Caryl Gronwall, Kyle S. Dawson, Massimiliano De Pasquale, Michael Siegel, Paolo Mazzali, Paul Kuin, Peter J. Brown, Peter Milne, Samantha Oates, Stefan Immler, Stephen Holland

arxiv:1110.2538 v2 · 2011-10-12 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RHG66CRBTQFHM7FDQDXPKDTFKR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:00:13.453303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89cdef0a219c0a767ca380eef50e6554762cecbefc21f9f3709a6c6f976ce6f3

Aliases

arxiv: 1110.2538 · arxiv_version: 1110.2538v2 · doi: 10.48550/arxiv.1110.2538 · pith_short_12: RHG66CRBTQFH · pith_short_16: RHG66CRBTQFHM7FD · pith_short_8: RHG66CRB

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RHG66CRBTQFHM7FDQDXPKDTFKR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 89cdef0a219c0a767ca380eef50e6554762cecbefc21f9f3709a6c6f976ce6f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b67061d1d32daaf67965a6e57cdc242baee4454dc87cf45abd894ff60c469c41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-12T00:28:35Z",
    "title_canon_sha256": "41ab6d0f27362a03a445c17499548e5b03ef9d5e728c7adc9e1f6b630ba5ac1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2538",
    "kind": "arxiv",
    "version": 2
  }
}